During the time window, the server 164 obtains contextual information from one or more sensors of the smart home environment 100, and determines whether an action from the visitor e. g. , a doorbell press, a door knock is detected within the time window. In accordance with an action being detected within the time window, a first type of response is initiated. Examples of the first type of response include sending a first type of notification to a user of a client device. In accordance with no action being detected within the time window, a second type of response is initiated.

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2 Ionization Detectors7.

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Color Security CameraThe color security camera captures images that help people distinguish grouped items.

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